Admiral Sir Benjamin John Key, KCB, CBE, ADC (born 7 November 1965) is a senior Royal Navy officer.

[2] He has commanded HM Ships Sandown, Iron Duke and Lancaster, and deployed on operations to Kosovo and Iraq.

[4][5][6] He studied physics at Royal Holloway, University of London,[7] graduating with a Bachelor of Science (BSc) degree in 1988.

[7] After serving as an observer in the Fleet Air Arm, he saw action as a Principal Warfare Officer in the frigate HMS Somerset during the Kosovo War in 1999.

[1] He was awarded the Honorary degree of Doctor of Science (D.Sc) by Royal Holloway, University of London on 20 December 2018.